Grade 3 – Greater teeth irregularities that do not usually need treatment for health reasons, such as a deep bite that doesn’t affect the use of your jaw. These cases are judged on an individual basis, and therefore may be eligible for NHS treatment.

Grade 4 – Severe teeth irregularities that need treatment for health reasons, such as having more or less than the normal number of teeth. Eligible for NHS treatment.

Grade 5 – Severe dental health problems, such as the disruption of normal skull and/or jaw development, or a large number of missing teeth. Eligible for NHS treatment.

For more information about IOTN scoring from the British Orthodontic Society click here.

If you are not eligible for treatment under the NHS, you may wish to look into our private treatment.